If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

Find out the missing number in the picture attached:

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?

What is the centre of gravity?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

The answer I give is yes, but what I mean is no. What was the question?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.